diff --git a/src/Makefile b/src/Makefile
index 1abf10d..c5fa3a6 100644
--- a/src/Makefile
+++ b/src/Makefile
@@ -54,7 +54,7 @@ ifneq ($(ICP_ROOT), )
 	endif
 else
 	QATFLAGS = -DINTREE
-	LDFLAGS  = -lqat
+	LDFLAGS  += -lqat
 	ifneq ($(ENABLE_USDM_DRV), 0)
 		QATFLAGS += -DENABLE_USDM_DRV
 		LDFLAGS	 += -lusdm
